Two-, Three- and Four-co-ordinate Gold(I) Complexes of 1,2-Bis(dipphenylphosphino)-1,2-dicarba-closo-dodecaborane

DOI: 10.1039/DT9920001601

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1601 - 1606 (1992)

Update date:2022-08-05

Topics:

Authors:

Crespo, Olga

Gimeno, M. Concepcion

Laguna, Antonio

Jones, Peter G.

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Article abstract of DOI:10.1039/DT9920001601

Treatment of (PPh2)2C2B10H10 with gold(I)complexes (tht = tetrahydrothiophene, X = Cl or C6F5) gives two-co-ordinate <(AuX)2<(PPh2)2C2B10H10>> or three-co-ordinate > species.Other three-co-ordinate compounds have been prepared starting from ClO4 (L = tht, PR3, or ylide) by reaction with the diphosphine.Substitution of tht in >ClO4 affords >ClO4 where, depending on the ligand, three-co-ordinate (L = SPPh3, AsPh3, or C5H4NSH) or four-co-ordinate complexes can be synthesised.The bis-chelated gold(I) phosphine complex 2>ClO4 has been isolated.The crystal structure of >ClO4*CH2Cl2 has been established by X-ray crystallography: monoclinic space group P2₁/n, a = 11.760(3), b = 20.290(5), c = 21.375(6) Angstroem, β = 105.10(2) deg, Z = 4, R = 0.032.The gold atom exhibits trigonal-planar co-ordination, by three phosphorous atoms with Au-P 2.318(1), 2.405(1) and 2.417(1) Angstroem (the longer bonds are to the diphosphine).

Full text of DOI:10.1039/DT9920001601

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